This Kansas City Southern set is one of the most beautiful sets Marx made*. The "B" unit is not part of the set but I couldn't resist showing it this way. These were some of the last tin sets designed by Marx. In fact, I believe the KCS was the last, coming out about 1957. The brown Seaboard gondola is a little less common than the red version but not what you'd call rare. I am showing this just because it is one of my favorites, not for its rarity.

* I was corrected by one of my good friends for stating this but since this is my work my opinion is the only one that counts!